Answer:
b.The author uses an objective observer to present a factual telling of the events of the story.
Step-by-step explanation:
To narrate is to tell one or more facts that occur with certain characters, at a defined time and place. In other words, it is telling a story, which can be real or imaginary.
In the excerpt provided in the question the author used an objective observer narrator. We know this because, this narrator knows all the story that will be narrated, but does not participate in it. So he knows the facts, but does not act like a character in the plot. In addition, the narrator describes the facts objectively, providing an accurate description of what is happening, without the personal expressions of the observer narrator.